A portion of Leone's book is published online by kind permission of the author: "'Theology of the Body' explained - a Traditional Catholic view" (Rorate Caeli, January 17, 2015). While the substance of the author's thesis is argued more thoroughly than one may easily summarize, here are some excerpts from his conclusions:
In fine, we see clearly that Theology of the Body is a personalist, phenomenological system. As such it is concerned with the subjective realm, such as the person and love, and neglects the objective realm, be it Catholic dogma (as with the doctrine that the primary end of sexuality and marriage is procreation or as with the distinction between the natural and supernatural orders,) or be it the perennial or scholastic theology, philosophy, or morality (as with the distinctions between the different forms of love). The outcome is a shift from the virtue of love to the passion of love, from supernatural love to natural love, and in the final analysis from sanctity to sexuality.
In this lack of catholicity, Theology of the Body, although presented as the praise of Catholic conjugal love, becomes instead a paean to Eros, with greater resonance for the world than for the Church. As such it constitutes certainly one of the more remarkable fruits of the much vaunted rapprochement  between the Church and the World.
 if one did not know that it was composed by the Pope himself, one might perhaps be excused for ascribing it to a personalist philosopher influenced by Christianity, such as Max Scheler.
 or aggiornamento
 see chapter 6 of the present book. There we illustrate how sexual love is the main theme hymned by the World – although characteristically in the form of fornication.